405 lines
11 KiB
JavaScript
405 lines
11 KiB
JavaScript
(function (root, factory) {
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if (typeof define === 'function' && define.amd) {
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// AMD. Register as an anonymous module.
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define(["jquery"], function ($) {
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return (root.returnExportsGlobal = factory($));
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});
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} else if (typeof exports === 'object') {
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// Node. Does not work with strict CommonJS, but
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// only CommonJS-like enviroments that support module.exports,
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// like Node.
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module.exports = factory(require("jquery"));
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} else {
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factory(jQuery);
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}
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}(this, function ($) {
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/*
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Implement Github like autocomplete mentions
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http://ichord.github.com/At.js
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Copyright (c) 2013 chord.luo@gmail.com
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Licensed under the MIT license.
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*/
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/*
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本插件操作 textarea 或者 input 内的插入符
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只实现了获得插入符在文本框中的位置，我设置
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插入符的位置.
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*/
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"use strict";
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var EditableCaret, InputCaret, Mirror, Utils, discoveryIframeOf, methods, oDocument, oFrame, oWindow, pluginName, setContextBy;
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pluginName = 'caret';
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EditableCaret = (function() {
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function EditableCaret($inputor) {
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this.$inputor = $inputor;
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this.domInputor = this.$inputor[0];
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}
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EditableCaret.prototype.setPos = function(pos) {
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return this.domInputor;
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};
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EditableCaret.prototype.getIEPosition = function() {
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return this.getPosition();
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};
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EditableCaret.prototype.getPosition = function() {
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var inputor_offset, offset;
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offset = this.getOffset();
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inputor_offset = this.$inputor.offset();
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offset.left -= inputor_offset.left;
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offset.top -= inputor_offset.top;
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return offset;
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};
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EditableCaret.prototype.getOldIEPos = function() {
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var preCaretTextRange, textRange;
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textRange = oDocument.selection.createRange();
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preCaretTextRange = oDocument.body.createTextRange();
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preCaretTextRange.moveToElementText(this.domInputor);
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preCaretTextRange.setEndPoint("EndToEnd", textRange);
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return preCaretTextRange.text.length;
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};
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EditableCaret.prototype.getPos = function() {
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var clonedRange, pos, range;
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if (range = this.range()) {
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clonedRange = range.cloneRange();
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clonedRange.selectNodeContents(this.domInputor);
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clonedRange.setEnd(range.endContainer, range.endOffset);
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pos = clonedRange.toString().length;
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clonedRange.detach();
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return pos;
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} else if (oDocument.selection) {
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return this.getOldIEPos();
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}
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};
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EditableCaret.prototype.getOldIEOffset = function() {
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var range, rect;
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range = oDocument.selection.createRange().duplicate();
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range.moveStart("character", -1);
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rect = range.getBoundingClientRect();
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return {
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height: rect.bottom - rect.top,
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left: rect.left,
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top: rect.top
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};
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};
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EditableCaret.prototype.getOffset = function(pos) {
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var clonedRange, offset, range, rect, shadowCaret;
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if (oWindow.getSelection && (range = this.range())) {
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if (range.endOffset - 1 > 0 && range.endContainer === !this.domInputor) {
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clonedRange = range.cloneRange();
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clonedRange.setStart(range.endContainer, range.endOffset - 1);
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clonedRange.setEnd(range.endContainer, range.endOffset);
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rect = clonedRange.getBoundingClientRect();
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offset = {
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height: rect.height,
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left: rect.left + rect.width,
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top: rect.top
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};
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clonedRange.detach();
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}
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if (!offset || (offset != null ? offset.height : void 0) === 0) {
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clonedRange = range.cloneRange();
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shadowCaret = $(oDocument.createTextNode("|"));
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clonedRange.insertNode(shadowCaret[0]);
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clonedRange.selectNode(shadowCaret[0]);
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rect = clonedRange.getBoundingClientRect();
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offset = {
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height: rect.height,
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left: rect.left,
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top: rect.top
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};
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shadowCaret.remove();
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clonedRange.detach();
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}
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} else if (oDocument.selection) {
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offset = this.getOldIEOffset();
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}
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if (offset) {
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offset.top += $(oWindow).scrollTop();
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offset.left += $(oWindow).scrollLeft();
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}
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return offset;
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};
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EditableCaret.prototype.range = function() {
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var sel;
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if (!oWindow.getSelection) {
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return;
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}
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sel = oWindow.getSelection();
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if (sel.rangeCount > 0) {
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return sel.getRangeAt(0);
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} else {
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return null;
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}
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};
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return EditableCaret;
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})();
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InputCaret = (function() {
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function InputCaret($inputor) {
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this.$inputor = $inputor;
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this.domInputor = this.$inputor[0];
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}
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InputCaret.prototype.getIEPos = function() {
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var endRange, inputor, len, normalizedValue, pos, range, textInputRange;
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inputor = this.domInputor;
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range = oDocument.selection.createRange();
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pos = 0;
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if (range && range.parentElement() === inputor) {
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normalizedValue = inputor.value.replace(/\r\n/g, "\n");
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len = normalizedValue.length;
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textInputRange = inputor.createTextRange();
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textInputRange.moveToBookmark(range.getBookmark());
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endRange = inputor.createTextRange();
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endRange.collapse(false);
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if (textInputRange.compareEndPoints("StartToEnd", endRange) > -1) {
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pos = len;
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} else {
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pos = -textInputRange.moveStart("character", -len);
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}
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}
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return pos;
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};
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InputCaret.prototype.getPos = function() {
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if (oDocument.selection) {
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return this.getIEPos();
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} else {
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return this.domInputor.selectionStart;
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}
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};
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InputCaret.prototype.setPos = function(pos) {
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var inputor, range;
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inputor = this.domInputor;
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if (oDocument.selection) {
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range = inputor.createTextRange();
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range.move("character", pos);
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range.select();
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} else if (inputor.setSelectionRange) {
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inputor.setSelectionRange(pos, pos);
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}
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return inputor;
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};
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InputCaret.prototype.getIEOffset = function(pos) {
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var h, textRange, x, y;
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textRange = this.domInputor.createTextRange();
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pos || (pos = this.getPos());
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textRange.move('character', pos);
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x = textRange.boundingLeft;
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y = textRange.boundingTop;
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h = textRange.boundingHeight;
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return {
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left: x,
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top: y,
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height: h
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};
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};
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InputCaret.prototype.getOffset = function(pos) {
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var $inputor, offset, position;
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$inputor = this.$inputor;
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if (oDocument.selection) {
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offset = this.getIEOffset(pos);
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offset.top += $(oWindow).scrollTop() + $inputor.scrollTop();
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offset.left += $(oWindow).scrollLeft() + $inputor.scrollLeft();
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return offset;
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} else {
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offset = $inputor.offset();
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position = this.getPosition(pos);
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return offset = {
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left: offset.left + position.left - $inputor.scrollLeft(),
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top: offset.top + position.top - $inputor.scrollTop(),
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height: position.height
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};
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}
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};
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InputCaret.prototype.getPosition = function(pos) {
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var $inputor, at_rect, end_range, format, html, mirror, start_range;
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$inputor = this.$inputor;
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format = function(value) {
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value = value.replace(/<|>|`|"|&/g, '?').replace(/\r\n|\r|\n/g, "<br/>");
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if (/firefox/i.test(navigator.userAgent)) {
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value = value.replace(/\s/g, ' ');
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}
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return value;
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};
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if (pos === void 0) {
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pos = this.getPos();
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}
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start_range = $inputor.val().slice(0, pos);
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end_range = $inputor.val().slice(pos);
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html = "<span style='position: relative; display: inline;'>" + format(start_range) + "</span>";
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html += "<span id='caret' style='position: relative; display: inline;'>|</span>";
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html += "<span style='position: relative; display: inline;'>" + format(end_range) + "</span>";
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mirror = new Mirror($inputor);
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return at_rect = mirror.create(html).rect();
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};
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InputCaret.prototype.getIEPosition = function(pos) {
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var h, inputorOffset, offset, x, y;
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offset = this.getIEOffset(pos);
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inputorOffset = this.$inputor.offset();
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x = offset.left - inputorOffset.left;
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y = offset.top - inputorOffset.top;
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h = offset.height;
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return {
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left: x,
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top: y,
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height: h
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};
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};
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return InputCaret;
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})();
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Mirror = (function() {
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Mirror.prototype.css_attr = ["borderBottomWidth", "borderLeftWidth", "borderRightWidth", "borderTopStyle", "borderRightStyle", "borderBottomStyle", "borderLeftStyle", "borderTopWidth", "boxSizing", "fontFamily", "fontSize", "fontWeight", "height", "letterSpacing", "lineHeight", "marginBottom", "marginLeft", "marginRight", "marginTop", "outlineWidth", "overflow", "overflowX", "overflowY", "paddingBottom", "paddingLeft", "paddingRight", "paddingTop", "textAlign", "textOverflow", "textTransform", "whiteSpace", "wordBreak", "wordWrap"];
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function Mirror($inputor) {
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this.$inputor = $inputor;
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}
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Mirror.prototype.mirrorCss = function() {
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var css,
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_this = this;
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css = {
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position: 'absolute',
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left: -9999,
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top: 0,
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zIndex: -20000
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};
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if (this.$inputor.prop('tagName') === 'TEXTAREA') {
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this.css_attr.push('width');
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}
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$.each(this.css_attr, function(i, p) {
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return css[p] = _this.$inputor.css(p);
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});
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return css;
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};
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Mirror.prototype.create = function(html) {
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this.$mirror = $('<div></div>');
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this.$mirror.css(this.mirrorCss());
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this.$mirror.html(html);
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this.$inputor.after(this.$mirror);
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return this;
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};
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Mirror.prototype.rect = function() {
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var $flag, pos, rect;
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$flag = this.$mirror.find("#caret");
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pos = $flag.position();
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rect = {
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left: pos.left,
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top: pos.top,
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height: $flag.height()
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};
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this.$mirror.remove();
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return rect;
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};
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return Mirror;
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})();
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Utils = {
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contentEditable: function($inputor) {
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return !!($inputor[0].contentEditable && $inputor[0].contentEditable === 'true');
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}
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};
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methods = {
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pos: function(pos) {
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if (pos || pos === 0) {
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return this.setPos(pos);
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} else {
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return this.getPos();
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}
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},
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position: function(pos) {
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if (oDocument.selection) {
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return this.getIEPosition(pos);
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} else {
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return this.getPosition(pos);
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}
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},
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offset: function(pos) {
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var offset;
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offset = this.getOffset(pos);
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return offset;
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}
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};
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oDocument = null;
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oWindow = null;
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oFrame = null;
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setContextBy = function(settings) {
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var iframe;
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if (iframe = settings != null ? settings.iframe : void 0) {
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oFrame = iframe;
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oWindow = iframe.contentWindow;
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return oDocument = iframe.contentDocument || oWindow.document;
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} else {
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oFrame = void 0;
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oWindow = window;
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return oDocument = document;
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}
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};
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discoveryIframeOf = function($dom) {
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var error;
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oDocument = $dom[0].ownerDocument;
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oWindow = oDocument.defaultView || oDocument.parentWindow;
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try {
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return oFrame = oWindow.frameElement;
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} catch (_error) {
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error = _error;
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}
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};
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$.fn.caret = function(method, value, settings) {
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var caret;
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if (methods[method]) {
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if ($.isPlainObject(value)) {
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setContextBy(value);
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value = void 0;
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} else {
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setContextBy(settings);
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}
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caret = Utils.contentEditable(this) ? new EditableCaret(this) : new InputCaret(this);
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return methods[method].apply(caret, [value]);
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} else {
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return $.error("Method " + method + " does not exist on jQuery.caret");
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}
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};
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$.fn.caret.EditableCaret = EditableCaret;
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$.fn.caret.InputCaret = InputCaret;
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$.fn.caret.Utils = Utils;
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$.fn.caret.apis = methods;
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}));
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